Behavior of an Innovative Square Composite Column Made of Four Steel Tubes at the Corners and Corrugated Steel Batten Plates on all Sides

Abstract

Steel-concrete composite (SCC) columns have widely been applied in modern construction industry owing to the composite action between the concrete and the steel. The benefits of SCC columns can be further achieved if the confinement effect of concrete is applied. Therefore, this paper presents an innovative square steel-concrete composite (ISSCC) column made of four steel tubes at the corners and corrugated steel batten plates on all sides. Through the experimental and finite element (FE) numerical simulation calculations, the axial compression performance and seismic performance of the ISSCC column were discussed, and the FE model was verified through experimental results. The seismic performance of the ISSCC column was compared and analyzed with reinforced concrete column under different axial compression ratios. The research showed that FE models can accurately simulate the deformation, stress, and failure states of the ISSCC column under axial pressure and horizontal low cyclic load. Furthermore, the ISSCC column performed good ductility and energy dissipation capacity, and the seismic performance index was better than the reinforced concrete column and had better seismic performance. The results of this study can provide reference for the design and development of the new composite column.

Energy Absorption Capacity of Concrete-Filled Steel Tube Slender Columns with Different Aspect Ratios

“…The Poisson's ratios of concrete and steel of the column were 0.2 and 0.3, respectively. To account for the confinement effect of the steel tube on the concrete core, the ratio of the second stress invariants on the tensile and compressive meridians (K c ) was taken as 0.667 [27][28][29]. The solid element C3D8R was used for the simulation of the concrete core, however, the shell element S4R was utilised for the simulation of the steel tube.…”

“…The solid element C3D8R was used for the simulation of the concrete core, however, the shell element S4R was utilised for the simulation of the steel tube. The Embedded Region constraint with the friction coefficient of 0.3 was employed for the contact between the concrete core and steel tube [27][28][29]. The load was applied to the column using the displacement control.…”

Compressive Behaviour of Circular, Square, and Rectangular Concrete-Filled Steel Tube Stub Columns

“…Since concrete was greatly influenced by the confinement effect of the steel tube, its behaviour was different from other common models. The ratio of the second stress invariants on the tensile and compressive meridians (K c ) was selected as 0.667 [21,22]. The viscosity parameter utilised for better convergence was 0.0001.…”

“…The constraint called Embedded Region was utilised to model the contact surface between the concrete core and perimeter steel tube. The used friction coefficient (μ) for the contact was 0.3 [21,22]. The load was applied by the displacement method.…”

Numerical evaluation of seismic performance of corrugated-plate shaped steel tubes

“…Steel tubes with corrugated shapes have been attractive topic for several research due to the lack of relative studies in the past. However, all available recent studies focused on the performance of steel tubes with either rounded or semi triangular plates [15][16][17][18]. More importantly, the axial behavior (static condition) prevailed the literature.…”